“Mac is not recognizing my HP v210w USB flash drive. When I plug the USB drive into my MacBook Pro running with OS X 10.7.2, it doesn’t detect the drive at all nor does it give an error message. How to fix this issue? The undetected USB drive has my several important files.”
Generally, when you plug in a USB drive into Mac machine, you will see that connected flash drive mounted on the desktop. You can also see the drive in Finder window. However, at times your Mac fails to recognize the USB drive due to numerous reasons.
So, in this article, it is explained how to fix when Mac won't recognize USB flash drive in a few simple steps without losing data present on the USB device.
1. Go to Finder and select Preferences. In General, tab check External disks box.
Check whether your USB drive is plugged in correctly or not. It is one of the main reasons for Mac not recognizing USB. And, if the USB drive is powered through a USB cable then verify that ample power is delivering to the drive.
Also, try swapping your USB cable and USB port which you are using to connect the USB drive.
2. Open Disk Utility, see your USB drive is mounted and check for its volumes. If you find the drive under Disk Utility, then select it and Mount. If the Mac has already mounted your USB drive, then the Unmount option will be available in place of Mount.
3. In Disk Utility, run First Aid on your USB drive. If Mac finds any error click on Repair Disk button to fix the errors.
4. In case, the USB drive is not formatted with Mac compatible file system then Mac cannot read it. So, plug it into another device or Windows computer, see it gets detected and copy data from it.
If your USB drive is not accessible in windows computer or on any other device, then the last option you have is to format the drive or Erase it in Mac Disk Utility. But, formatting will erase entire data from your USB drive. So, recover files from flash drive first, then format it in Mac.
Remo Recover (Mac) software recovers files from when Mac won't recognize USB flash drive. The data recovery tool restores data from the USB drive, external hard drive, Flash drive etc. of various brands, such as Iomega, WD My Book, LaCie, Seagate, etc. This powerful file recovery algorithm best suits for all latest versions of Mac OS X and supports all storage devices.
Step 1: Connect the USB flash drive to a working Macintosh, run Remo Recover (Mac) and click on Recover Volumes/Drives button.
Step 2: Choose the Volume Recovery option and select the connected USB flash drive from listed drives.
Step 3: Select all found volumes and click the Advanced Scan button.
Step 4: Recovered files from the USB drive will be listed in two different views.
Step 5: Preview restored data and Save required files onto the Mac hard drive.
Make sure that your USB drive doesn’t get affected in the future due to inappropriate handling. So, don’t just unplug your USB cable, always unmount the USB disk properly before ejecting it.